Mortise-riveting.



0.25. LOCKWOOD. MORTISE RIVETlNG. AFPUERTI N FILED MAY 9. 1912.

v 1mm Aug. 13, 1918;

I I b e j Be it known that 1, CHARLES S.

UNITED STATES FATE l 1 GFFIGE.

CHARLES s. LocKwoon, or NEVJARK, nEw JERSEY, ASSIGNOR ro HYATT ROLLER BEARING DIVISION, UNITED Morons CORPORATION, or HARRISON, NEW JERSEY,

A CORPORATION OF NEW YORK.

MOBTISE-RIVETINGZ Specification of Letters Patent. Patented Aug. 13, 1918.

Application filed May 9, 1917. Serial No. 167,552.

To all whom it may concern LOCK' wooo, a citizen of the United States, residing at 496 Clinton avenue, Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in lWIortise-Riveting, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to a particular means of securing the ends of tie-bars in flat heads, such as are employed in the cages for the rolls of roller-bearings and analogous constructions.

The invention consists in forming the end of the tie-bar with a tenon to extend through the head, by shouldering down the tie-bar for a sufficient distance, forming a groove in such a part of the tenon as would be inclosed in the mortise in the head, then applying the head to the tenon and forcing the metal of the head around the mortise inwardly, thereby pressing the head forcibly locking the same permanently in the head with the shoulder tight against the head.

When it is desired to conceal the depression or counterbore formed by the tool around the outer end of the mprtise, the tenon is projected through the mortise'far enough to-be expanded into the counterbore 2nd thus finish the joint with a flush surace.

The invention is therefore applicable to any fiat plate where the shouldered tenon can be projected through the plate and pres sure applied to the plate opposite the shoulder to lock the tenon in the mortise, and simultaneously crowd the plate against the shoulder.

The nature of the invention and its mode of application will be understoodby reference to the annexed drawing, in which Figure 1 is a section of a plate with a grooved tenon inserted therein; and Fig. 2 is a section of a' tool adapted to press the metal around the tenon longitudinally of the tenon. Fig. '3jis a section of the same parts in Fig. 1, engaged by pressing the metal of the plate inwardly; Fig. 4 is a view analogous to Fig. 1 with the tenon projected outside of the plate; Fig. 5 is a section similar to Fig. 3 with the metal of the of tie same parts with the projecting end of the tenon headed over.

Fig. 7 shows a tie-bar with grooved tenons at opposite ends.

A fiat plate ais shown in the drawing to represent the head of a roller-bearing cage, and it has a mortise 1) extended entirely through the said plate.

The tenon c is shown formed upon the end of a rod (Z, by shouldering down the end of the rod, such a rod being shown in Fig. 7 as a tie-bar 0! having at its left-hand end a tenon with a rounded groove 6, and at its right-hand end a beveled groove 0'.

Fig. 2 shows an annular pressing tool or punch 19' adapted to operate upon the metal surrounding the end of the tenon and to press such metal inwardly, as shown in Fig. 3 and force the metal of the plate a laterally toward the tenon, thus crowding it into the rounded groove e.

plate compressed; and Fig. 6 is a section Such laterally moved metal forms an annular rib g which embraces the groove e like a tight collar, and wholly prevents the withdrawal of the tenon from the mortise.

In any construction where the counter- (bore f caused by the punch f would be a disfigurement, the same may be concealed by forming the tenon originally to project out sidethe surface of the plate A, as shown in Fig. 4, the pressing tool being then operated to crowd the metal of the head into the groove 6 or e, as shown in Fig. 5; and a subsequent pressure with a flat faced tool forces and expands the pro ecting end of the tenon into the counterbore f, as shown in Fig. 6, thus finishing the joint with a fiush surface.

This construction of Fig. 6 forms an exceedingly ri id connection, as the metal of a securing the tie-bar therein.

' tight joint between the tie-bar andthe head, while I 13; a apart, s jus :iiessribsag,

mm saapamtmgl flames she Qigsaiy mam time 'simuin'ms 1 3 1 Q 'cuma tale heads pammuem y parahel "with 0519 another,

Ki i. The methed of engagimg a red 05: bar

with wcagwhwd having a mm'fise. extended emimaiy ihmugh tbs sauna, whisk consists in, .shoulderng down the said bar in form a lawn with a shnuisr 21$ fine, base of thafiam-s, making an annular groeve in the @1011, 'suppsriing tbs r051 02' bear against and-thrust wzth the cage-head resting upon the said shuulder during the engagemant 03E 9:1 is loszva the aid she.

5L, Emmi $10351 am iasi- 1 im'cing ihe metm m team v The; pmcess of engaging md c1" bar with a Rate havinv a mofiise emfiudgad the same, which camsists in. shoul- Em-mg down the said. bar to form a "Lemon with a shoulder at the base of the, same, the team being progoz'tiened to fat in and extemi bayond th said martis'c and having an anmilar gmm'e adapied t0 be'incawi with. in the mortise, supporting the md 01" bar against end thrust duriug the entire engagement of the same with aha plate then forcing inward ihe mam @f fly: giiaie surrounding the outer emi of the morfise, thereby pressng the plate firmly against the; show?- der and crowding the metai 05 {he plate inwardly around the M21101: and than heading fiver the outer and 9f the 27211011 5mm the dezpressien thus formed,

In testimpny whereof K have ama sat 

